I have a crystal pure 3.0 bought from you. The salt display says 3.6 instead of 3600. I read onlne and on your site it is because it is in metric. So I go to the temperature screen, go to super chlorinate, back to auto, it changes the temperature to farenheit, so no longer metric. But when it goes back to the main screen it still shows 3.6 instead of 3600. Checking temperature shows it is English and no longer metric. How to fix this?